16.8 From the data in Table 16.1, calculate the activity of the electrolyte and the mean activity of the ions in 0.1 molal solutions of
a) KCl, b) H2SO4, c) CuSO4, d) La(NO3)3, e) In2(SO4)3
Table 16.1
Mean ionic activity coefficients of strong electrolytes
m
0.001
0.005
0.01
0.05
0.1
0.5
1.0
HCl NaOH KOH KCl NaBr H2SO4 K2SO4 Ca(NO3)2 CuSO4 MgSO4 La(NO3)3 In2(SO4)3
0.966
0.928
0.904
0.830
0.82
0.82
0.815
0.844
0.340
0.52
0.54
0.21
0.22
0.39
0.054
0.796
0.758
0.69
0.73
0.651
0.695
0.154
0.809
0.68
0.76
0.606
0.686
0.130
0.92
0.927
0.934
0.639
0.78
0.77
0.53
0.90
0.901
0.914
0.544
0.71
0.71
0.41
0.40
0.57
0.142
0.80
0.769
0.800
0.265
0.43
0.48
0.16
0.18
0.33
0.035
0.965
0.966
0.830
0.89
0.88
0.74
0.38
0.068
0.088
0.35
0.047
0.064
By permission from Wendell M. Latimer, The Oxidation States of the Elements and Their Potentials in Aqueous Solutions, 2nd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1952, pp. 354-356.
